Note! 3/16inch models represent 1/8 inch+3/16 inch+1/4 inch+5/16 inch, 1 piece per size. 1/2inch models represent 3/8 inch+1/2 inch+5/8 inch+3/4 inch, 1 piece per size. In the field of precision machining, reaming blades are used to control the tolerance of the bore diameter to H7 grade. Reamers are able to operate at higher cutting speeds and feeds, further improving machining efficiency. The order comprises 4pcs of reamers, shipment will be made according to your selection. Straight shank milling cutter tool set are widely used for bore machining, reaming to mould processing and handicraft processing, installed in drilling machine, milling machine, etc.Reamer set can process surface of iron, steel, plastic, wood, copper, aluminum and other metal materials., Manufacturer: RybdaFDc